Chess 2380

2380 1...Bxb2+! 2 Qxb2 (if 2 Kxb2 Qxd1 wins on material) Qxd1+! 3 Kxd1 Rad8+ 4 Kc1 (4 Qd4 Rxd4+ is hopeless) Re1 mate.


Chess 2379

1 . . . Kf1! and White resigned. If 2 Rh3 Qg2 mate, or 2 Rg4 Qf3+ and Qxg4, or 2 Rg5/6/7/8 Qh4 mate. Other black first moves are slower, and 1...Qxg3?? is a stalemate draw. 2380 1...Bxb2+! 2 Qxb2 (if 2 Kxb2 Qxd1 wins on material) Qxd1+! 3 Kxd1 Rad8+ 4 Kc1 (4 Qd4 Rxd4+ is hopeless) Re1 mate.


Chess 2378

1 Qb3?? Qd7+! and White will be checkmated.


Chess 2377

1...Qc4+! 2 Bxc4 Rxh2 and White can only delay Rh1 mate. Instead the immediate 1...Rxh2?? loses to 2 Qxf8+! Kxf8 3 Re8 mate, so Black had to start by diverting White's b5 bishop.


Chess: 2376

1 Qg3! and Black resigned. The threat is 2 Qxe5 Qxe5 3 Nf7 mate. If 1...h62 Qxe5 wins a piece, while if N6d7 2 Nf7+ wins the queen. Black’s only try is 1 Qg3 Nfg4 2 Bc3 Bb8 but then 3 Bxe5 Nxe5 4 Qxe5! wins a piece as before.


Chess: 2375

1 e6¹ Qc1+ (if Qxg3? 2 Rxd8 mate) 2 Kh2 Rxd4 3 e7! Qc8 3 Qe5! Rh4+ 4 Kg3 and Black resigned faced with the double threat Qg7 mate and e8Q+. 1 Rc5 and 1 hxg6 are slower wins.


Chess: 2374

1 h5! Rb1 2 Kg2! (stops Rh1) g4 3 h6 Rb5 4 h7 and White’s queening pawn will cost Black his rook.


Chess: 2373

1 g6+! and if Kxg6 2 Bf5+! Kh6 3 Rh8 mate or Kh6 2 Bf5! and mates.


Chess: 2372

1 Qf6! Qxh6 2 Rxe6 and Black resigned. Mate follows by Qh8 or by 2...Qg7 3 Qd8.


Chess: 2371

(Black moves first) 1 Kb2 Rd5 2 Kc3 Rc5+ 3 Kd4 Nb3 mate.


Chess: 2370

1...Nxf3+ 2 exf3 Bg2! and White resigned. If 3 Kxg2 Qh3+ and Qh1 mate or 3 Bxh8 Qh3! and mates.


Chess: 2369

Please note that as our column covers the Winton British Solving Championship, there is no Chess solution this week.


Chess: 2368

1...Bf3! (threat Rh1 mate) 2 Ke1 Rd4! (the follow-up Svidler overlooked) and Rd1 mate follows after White runs out of suicidal checks.


Chess: 2367

1...Kh6! threatens g6-g5 mate. If 2 g3-g4 Qf2 mate.


Chess: 2366

1 Rxf6! gxf6 2 Qe3! and Carlsen resigned in the face of Qxh6+ and Qg7mate.


Chess: 2365

1 Ng5! wins. If Qxg5 2 Rxh7 mate. If 1...h6 2 Rxh6+ Qxh6 3 Qxh6 mate. If Bxh2 2 Rxh7+! Qxh7 3 Nxf7 mate.


Chess: 2364

1 Rf8+! Kxf8 2 Qf1+! Rxf1, stalemate draw. Instead 2 Qf3+? Bxf3! or 2 Qf2+? Nf4! 3 Qxf4+ exf4 or gxf4 both allow White a pawn move so there is no stalemate.


Chess: 2363

1 Bxf7+! Kxf7 2 Rxg5 is best, with an easy draw. As played, White fell for the trap 1 Bb1?? h4+ 2 Kg4 f5+! 3 Rxf5 which unpins the black rook and allows 3...Rg2 mate.


Chess: 2362

1 Rf7! g3 2 Be4! Ka2 3 Bh7! Ka1 4 Bg8! Ka2 5 Rf1 mate.


Chess: 2361

1 Qg3! If Kd2 2 Qf3 Ke1 3 Kc2 mate. If Ke2 2 Kc1 Kf1 3 Kd2 mate (composed by Otto Wutzburg).


Chess: 2360

1 a4! g4 2 Qa3! Bxb5+ 3 axb5 mate. The trap is 1 Qf5?? threatening 2 Qc8 mate, when Black’s Bxb5+ checks the white king.


Chess: 2359

1 Qf4+! gxf4 2 Bxf4+ Ka8 3 Nb6+! axb6 4 axb6+ Na6 5 Rxc8+! Rxc8 6 Rxa6+! bxa6 7 Bg2+ Rc6 8 Bxc6 mate.


Chess: 2358

1 a3 e5 2 Nc3 Bxa3 3 Ne4 Bf8 4 Ra5 Ke7 5 Rxe5 mate.


Chess: 2357

1 Nh5+! If gxh5 2 Qg3+ and 3 Qg8 mate. The game ended 1...Kh8 2 Bh6! gxh5 3 Qg3 Bxe4 4 Bg7 mate. If 1...Kf8 2 Nxf6, threatening 3 Bh6 mate, is quickly decisive.


Chess: 2356

1...Rd7! If now 2 Be1 Rd1 3 Kf1 Bd3+ wins rook and bishop. The game ended 2 Bb4 Rd1+ 3 Kh2 Kg4! and White resigned since Rh1 mate can only be stopped by Rg5+ surrendering a rook.


Chess: 2355

(a) 1 Nf5+! (b) Any black king move allows Rd6 mate, Rd8 mate, or Ng7+ forking king and rook, so Black had to play Rxf5 2 Kxf5 a4 3 Re2+ Kd7 4 Rd2+ with a draw. (c) Where does the king go, Yasser?


Chess: 2354

1 R4xh5+ gxh5 2 Qc7+! (2 Rxh5+? Kg6! is only a draw) Kh8 3 Qe5+! Kh7 4 Rxh5+ Kg6 5 Qg5+ Kf7 6 Rh7+ Ke8/f8 7 Qe7 mate.


Chess: 2353

1 Rh4! h6 2 Bh2! Kxd4 3 Ne5! fxe5 4 fxe5 mate.


Chess: 2352

1 Rc7! wins a piece with the threat of Rxf7+ and Rxf6. Black’s dark squared bishop has to guard his d4 rook. The game ended 1...Bh8 2 Rc8+! Ke7 3 Rxh8 and Black soon resigned.


Chess: 2351

1 Qxf6! If exf6 2 Re8, or gxf6 2 Ne6, or Rxf6 2 hxg7, or g6 2 Qh8, or Kg8 2 Qxg7, or Nc4 2 d8=Q, or Ne8 2 Qxf7. Traps include 1 Q or Bxd6? Kg8! or 1 d8=Q+? Ne8 or 1 h7? e5! or 1 d7? e5! when 2 d8=Q+?!? leaves White’s king in check (by Denys Bonner, 1960).


Chess: 2350

1 f3+ Kh4 2 Ra4!! Rxa4+ 3 Kb5. The black rook has no escape, so White has a trivially won pawn ending (composed by Josef Hasek, 1927).


Chess: 2349

1...Qxh2+! 2 Kxh2 hxg3++ 3 Kg2 Nf4 or Rh2 mate.


Chess: 2348

1 Rf1! is the key. If Kxe4 2 Qh1, or Kxc6 2 Qa8, or Kxe6 2 Qg8, or Kc4 2 Nf4. The puzzle was composed by Heinrich Juhe.


Chess: 2347

1 Qxc5! Qxc5 2 Be4+ Kh5 3 Kh3! and g4 mate.


Chess: 2346

Solvers proposed 1 Ne3 ‘mate’ but this leaves the WK in check from the e4 rook. The real answer is 1 Qc8! (threat 2 Qg8 mate) when 1...Nb4 2 Ne3 really is mate or 1...Nd4 2 Nb6 mate (by John Rice and Michael Lipton).


Chess: 2345

1 Rxg7! Kxg7 (if Rb1 2 Rg1! Rxd1 3 Rxh6 mate) 2 Qg1+ Kf8 (if Kh7 3 Bf5+ Kh8 4 Rxh6 mate) 3 Bf5+ Nxf5 4 Qg8+ Ke7 5 Qf7 mate.

Chess: 2344

Four-time Australian champion Cecil Purdy composed this puzzle and gave the answer as one and three-quarter moves. The white king is off the board so must be in White’s hand en route to 1 0-0-0 Ke3 2 Re1 mate. Castling is half a king move, half a rook move, hence White is a quarter of the way through the process. But I prefer 1.51 moves, with the king on the point of touchdown at c1.

Chess: 2343

Black fell into his own trap.The game ended 1...Qxf6?? 2 Bg5 Bxf3 3 Qc1! (but not 3 Qd2?? Bb4! with an edge for Black) Bb4+ 4 Kf1! and Black, an IM, lost his queen at Athens 2001.

Chess: 2342

1 Qh7+ Ke6 (if the king goes to the back row, 2 Qh8+ and 3 Qxa8) 2 f5+ Kd5 3 Qg8+!! Qxg8 4 Kd3! and 5 c4 mate.

Chess: 2341

1 Bd8+! and Black resigned.If 1...Kxd8 2 gxh6 Nf6 3 Kxb6 and White will queen the a4 or h6 pawn. If the black king stays on the queen’s side, the white king goes to the other flank to capture the knight and/or queen the h6 pawn. Knights fear rook pawns.

Chess: 2340

1 Bb3! (threat 2 Qa4 mate) If 1...Kxb3 2 Qc2+ Ka3 3 Qa2 mate. 1...Bf5+ 2 e4 only delays the mate. The game ended 1...Bd7 2 Qc1+ Kxb3 3 Qc2+ Ka3 4 Qa2 mate.

Chess: 2339

Because if 1 Rc2+ Kf3! 2 b6 Black replies 2...Qh3+! 3 Kxh3 with a stalemate draw.

Chess: 2338

1 Qd8! b6/g5 2 Rd7! g5/b6 3 Rd2! exd2 4 Qxb6 mate (by Fritz Giegold).

Chess: 2337

The traps are 1 c8=Q? which is an immediate stalemate draw, 1 c8=R? Ke6! 1 c8=B? Kc6! and 1 c8=N? Kc4! Instead, mate in two is by the unlikely 1 Ne4! when if Ke6 or Kc4 2 Qf7, or Kxe4 2 Qf3, or Kc6 2 Qd6. (composed by Fadil Abdurahmanovic, 1957).

Chess: 2336

The non-checking 1 Rd1! is the only way to mate in two. If Ke5 2 d4 mate, or Kc3 2 f7 mate, or Kc5/e3 2 Qg1 mate.

Chess: 2335

1 Qa2! bxa2 2 Bf5! Kxf5 3 Ng7 mate.

Chess: 2334

1 Bd4! g3 2 Bb6! axb6 3 Kc1! Kxc3 4 Ne2 mate.

Chess: 2333

1 Ng7+! Bxg7 2 g4+! when if fxg4 3 Qh2 mate or Kh4 3 Qg3 mate or (the longest line) Kxg4 3 Bd1+ Bf3 4 Bxf3+ Kh4 5 Qg3 mate.

Chess: 2332

1 Bd8! (threat 2 e7+) Re3 2 Bf6! and a white pawn queens.

Chess: 2331

1...Ne7! stops White’s Qf8 and threatens Rh1 mate, which White can only prevent by 2 Qxc6, surrendering his queen.

Chess: 2330

1 Kb2! a1=Q+ 2 Rxa1 h1=Q 3 Qxh1 mate.

Chess: 2329

No chess solution this week.

Chess: 2328

1 Rh4! Rxb4+ 2 Kc5! when Rxh4 is a stalemate draw, Rc4+ 3 Rxc4 bxc4 4 Kxc4 is a drawn pawn endgame, and Rb2 3 Rh7+ Kb8 4 Kxc6 is a drawn rook ending. This tactical trick has occurred several times, and is worth remembering.

Chess: 2327

1 Bd7! Ke3 (if Kg2 2 h4 and queens or Kf3 2 Kd4! Kf4 3 h4) 2 h4 Ke4 (if Kf4 3 Kd4) 3 h5 Ke5 4 h6 Kf6 5 Be8! (the point of playing Bd7 earlier) when the black king cannot reach g7 so the pawn queens.

Chess: 2326

(by Florencio Mendes de Moraes) 1 Qa4 (or Qa3) Kg8 2 Qa1! Kf8 3 Q1a2 Ke8 4 Q2a3 Kd8 5 Q6a4! Kc8 6 Qa8+ Kc7 7 Q4a7 mate.

Chess: 2325

1 Qa3! threatening 2 Nc5 mate. If Black guards c5 by Qf8 then 2 Nxd2 mate, or if Qe3 2 Qxa8 mate. Traps are 1 Qg1? Qf4! (2 Nc5+ Kf3) and 1 Qf2? Qe3!

Chess: 2324

1 Rh5! Qxd7 2 Ng5+ Kh8 3 Rxh6 mate.

Chess: 2323

1 Qc3! (stops Black’s queen checks) Qb7 (Black has to guard against both Qg7 mate and Qc8+) 2 Qa1! wins. Black’s queen has to stay put to stop both Qg7 mate and Qa8+, while if 2...Kf8 3 Qh8+ and 4 Qh7+ wins the queen.

Chess: 2322

White wins by 1 Rxe6! fxe6 2 Nd4! cxd4 3 d7 and the pawn queens.

Chess: 2321

1 Qe3-a3 is the only legal checkmate.

Chess: 2320

1 Nf5! Qd2+ (if Kg6 2 Rg7+ Kh5 3 Rh1 mate) 2 Kf3! (not 2 Kh3? Qxe1 3 Rxh6+ Kg5) Qxe1 (if Qh3+ 4 Kf2 Qd2+ 3 Re2 wins) 3 g4+ Kg6/g5 4 Rg7 mate.

Chess: 2319

1 Qe5!! wins with the threats 2 Qb8+ mating, 2 Qxd5 winning the queen and 2 c4+ winning the rook. If 1... Rxe5 2 c4+ wins the queen, or 1...Qxe5 2 c4+ Rxc4 3 bxc4+ Kxc4 4 fxe5..

Chess: 2318

No solution published this week as the problem is the first stage of the national solving championship.

Chess: 2317

1 Bh2! Bxh2 2 g3 Bxg3 3 Rf4 Bxf4 4 d6 Bxd6 5 Qh2! Bxh2 6 Re5 Bxe5 7 Nb5 Bf4! 8 f6 Bxc7+ 9 Nxc7, draw by stalemate.

Chess: 2316

1...h5+! 2 Kxh5 Ra8? 3 Kg3 Rh8 (Ne5+? 4 Kxf4) g3 avoids mate although White loses his h3 bishop. Instead 2...Ne5! 3 Rxb2 Ra8! forces mate.

Chess: 2315

Surprisingly, it’s a draw: by 1 axb7 Re6+! 2 Kxe6 (if 2 Kd5 Re8 and captures the new queen) Kc6! when 3 b8=Q or 2 b8=R draw by stalemate, 3 b8=B cannot win with two dark-squared bishops, and 3 b8=N+ Kb7 draws.

Chess: 2314

1 Kd3! If Kf5 2 Kd4 mate, or Kd5 2 Qd4 mate.

Chess: 2313

1 Rd6 Kc8 2 Ka7! Kc7 3 Rac6 mate.

Chess: 2312

Yes, because if 1 Kg2! Rf2+ 2 Kh1! Rxe2 White has 3 Bd3+! Kxd3, draw by stalemate. After 1 Kg2 Black takes around 40 moves to checkmate even with optimum play, so in practice White might well have drawn by the 50-move rule.

Chess: 2311

1...Ra4! and White resigned. He loses at least a rook after 2 Qxa3 Rxb1+ or 2 Rxb3 Qxa1+.

Chess: 2310

1 Rxe6! Kxe6 2 Qxd5+! Kxd5 3 Bc4 mate. Black saw it coming, so declined the rook, but after: 1...Nb8 2 Re7+ Kg8 3 Bg2 Bf8 4 Qxd5+ he resigned faced with heavy material losses.

Chess: 2309

1...Bxg3+! 2 Kxg3 Qc7+ 3 Kg4 Be6+ and White resigned because of 4 Kh5 Qf7+ 5 Kg5 h6 mate or 4 Kg5 Qg3+ 5 Kh5 Bf7 mate.

Chess: 2308

1 Rxf8+! Kxf8 2 Bxd6+! Resigns since Qxd6 3 Qa8+ leads to mate and 2...K moves 3 Bxc7 puts White a piece ahead.

Chess: 2307

1 Qe4? f5! 2 Qxe5 Bf6 traps the white queen.

Chess: 2306

1 Kd4! Nc2+ 2 Ke5! Nxa1 (if f6+ 3 Ke6 Nxa1 4 Ke7 wins) 3 Kf6! c2 4 Rg8+! Rxg8 5 Nxf7 mate.

Chess: 2305

1...Qe2! and White resigned,.If 2 Rxe2 Rf1 mate or 2 Rxf4 Qg2 mate or 2 Qd2 Qf1+! 3 Rxf1 Rxf1 mate.

Chess: 2304

1 Ke4! b4 2 Bh8! c3 3 Ke5! c2 4 Kf6! c1Q 5 Bg7 mate.

Chess: 2303

1...Rb8+ 2 Rg8 Ne8! 3 Rf8 Kg6 and if 4 Kg8 Nf6+ and mates or 4 Rg8+ Kf7 5 Kh7 Nf6+ wins.

Chess: 2302

1 Rhe8! g5 2 Rd2! Kxd2 3 Bb4 mate.

Chess: 2301

1 Rf1! (not 1 Rxe6?? Rf2+ and Black wins) when if Rxe3 2 Rxf8 mate (the Bg7 is pinned). If 1... Rxf1 2 Qxf1 (threat 3 Qf8 mate) Qc8 3 Rxe6 Qxe6 4 Qf8+ Qg8 5 Bxg7 mate.

Chess: 2300

1 Bd6! Ncd4 (other moves also lose) 2 Qg7+! Nxg7 3 Nh6 mate.

Chess: 2299

1 f7+! If Kxf7 2 Rxh7+ wins. If Rxf7 2 Rh8+ wins. But the real point is Qxf7 2 Qc2! with the winning double threat of 3 Qxc8 mate and 3 Qxh7+.

Chess: 2298

White wins by sacrificing both rooks: 1 Rf8+! Rxf8 2 Ra8+! Kxa8 3 Qa3+ Kb8 4 Qxf8+ Qe8 5 Qxe8 mate.

Chess: 2297

1 Kxc4! d3 2 Kxd5 d2 3 g4+! Kf4 or Kxg4 4 Rc4+ and Rd4 and captures on d1 or d2.

Chess: 2296

1 Bxe8+ Kxe8 2 Qb5+! Rxb5, draw by stalemate.

Chess: 2295

1 Rh1! (here and next move Bd1! is also strong) Qe6 2 Rgh3! a4 3 Rxh5! gxh5 4 Rxh5 with the decisive threat 5 Qxh7+! Nxh7 6 Rxh7 mate.

Chess: 2294

1 Qe2! when if exf2 2 Qxh5+ Kg7 3 Rxg3+ wins. If 1...Rg1+ 2 Rxg1 Rxg1+ 3 Kxg1 exf2+ 4 Kg2 keeps the Qxh5+ threat. The actual game ended 1 Ne4?? Qxe4+! 2 Bxe4 Rh3 mate.

Chess: 2293

(a)1 Rf7+! Kg5 2 h4+! Kxh4 (Kh6 3 Bxg7 mate) with 3 Rh1+ Kg5 4 Rh5 mate or 3 Rxg7 and 4 Rh1 mate. (b) 1 g4+! Kg5 (if Kxf4 2 Be3 mate) 2 h4+! and mates as previously.

Chess: 2292

1 Qxd3! If 1 . . . b2 2 Qb1! wins all the pawns. If 1 . . . c2 2 Qc3! a2 3 Qb2! with the same result.

Chess: 2291

The obvious answer is black king at d3 and White mates by 1 0-0-0, but this is invalid because the position with White to play has no legal black previous move. Correct is that there are two solutions: c6, when White mates in one by 1 Qb5, or d3, when Black, not White, delivers mate by Qg1.

Chess: 2290

(by Fritz Giegold, 1974) 1 Qxd5+! Kxd5 2 Ne6! and if Kxe6 2 Bxc4 mate, or Ke4 3 Bc6 mate.

Chess: 2289

(by Julien Guisle, Le Figaro 1956) 1 Rh7! The rook opens up two queen-bishop diagonal strikes.

If Kc1 2 Bh8! and if Kb1 3 Qg7 Ka2 4 Qb2 mate, or if 2... Kd1 3 Qg7 Kc1/e1 4 Qa1 mate. If 1...Ke1 2 Ba8! and if Kd1 3 Qb7 Kc1/e1 4 Qh1 mate or if 2...Kf1 3 Qb7 Kg1 4 Qh1 mate.

Chess: 2288

(by Pal Benko, 1990).1 Kg1! If Rf4 2 Rb5! cxb5 3 b7. If Rh6 2 Re8! Kxe8 3 b7. If c5 2 Rf5! Rxf5 3 b7. If 1...Rd6 2 Re1! c5 3 Rb1. Most other white first moves fail to Rh6+-h8 or Rf1+-b1 stopping White’s b pawn.

Chess: 2287

(a) e3 (b) h1 (c) a8 and mate by 1 Qc8 (d) g7. However White arranges his three pieces, the BK always has a flight square at g8 or h7

Chess: 2286

(a) 1...Kg3! and h5-h4-h3-h2 mate. (b) 1 f6! gxf6 2 Kxg2 Kg5 3 a4 bxa3 en passant 4 bxa3 Kf5 5 a4 Ke5 6 d6! cxd6 7 c6! dxc6 8 a5 and White queens..

Chess: 2285

1...d1=N!! 2 Nxd1 Qe1 and White soon runs out of queen checks after which Qg1 mates. Instead 1...d1=Q? allows 3 Nxg4+! fxg4 3 Qh7+! Kxh7 with a stalemate draw. In the actual game, which went differently, White could have drawn but blundered into defeat.

Chess: 2284

1 Bxe6! fxe6 (other moves also lose quickly) 2 Rh8+! Kxh8 3 Rh1+ Kg8 4 Rh8+! Kxh8 5 Qh1+ Kg8 6 Qh7 mate.

Chess: 2283

1 Nf6+ was the move-but it was White who resigned after 1...exf6 2 gxf6 (threat 3 Qg7 mate) Qxf2+! because of 3 Kxf2 Ng4+ and Nxh6 or 3 Kh1 Qxf6.

Chess: 2282

(by A von Schmidt, 1900).1 Nb4! (threat 2 Nc6 mate) If Kxf4 or Kd6 2 Nd3 mate. Kasparov solution: 1 Bh5! with 2 Bxg6! hxg6 3 h7 and queens or 1,,,gxh5 2 g6!

Chess: 2281

1...f4+! and Topalov resigned. If 2 Kxf4 Kd3! (threat Qg4 mate) 3 Qg5 Qf2 mate.

Chess: 2280

1 Bf3! bxa6 2 Ne2! a5 3 Re1! axb4 4 Nxd4! exd4 5 e5 mate.

Chess: 2279

1 Rc1! g4 2 Rc2! dxc2 3 Bc1! a3 4 Rf4! Kxf4 5 d4 mate.

Chess: 2278

1 Rd2! c6 2 Kf2! Kxf4 3 Ne6 mate.

Chess: 2277

1 Rf1! (the only way). If Bh6 2 Rf4! Bxf4 3 0-0 mate. If e4 2 Rf6! Bxf6 3 0-0 mate. If Rf8 2 Rxf8, or Bg8 2 Rf7! or Re6 2 Rf3! with the same mate. If Be4 2 Rf3 dxe2 3 Kxe2 mate.

Chess: 2276

(by Aleksandr and Kirill Sarychev, 1928) 1 Kc8! b5 2 Kd7! Bf5+ 3 Kd6 b4 4 Ke5! (gains a move by attacking the bishop) Kg4 5 Kd4 b3 6 Kc3 Be6 7 c8=Q Bxc8 8 Kxb3 draws.

Chess: 2275

1 Be2! h6 2 Rh4! h5 3 Kg5! Ke4 4 Bf3 mate.

Chess: 2274

1 Nc7! If Kxc7 2 Bh2 mate, or Kxe7 2 Bc5 mate, or Bxc7 2 Nc8 mate, or Bxe7 2 Ne8 mate. Near misses include 1 NChess: 2275f6? Bxa5!

Chess: 2273

1 Ra3! b4 2 Ra4! b3 3 Rh4! Kxh4 4 Nf3 mate.

Chess: 2272

1 Ra8! gxh4 2 Rg7! Kxg7 3 Be5 mate.

Chess: 2271

1 Be1! g3 2 Be2! dxe2 3 Rb4! Kxb4 4 d4 mate.

Chess: 2270

1 Rxa6! If Kxa6 2 Rc5! Ka7 3 Ra5 mate. If Kxc4 2 Rb6! Kd4 3 Rb4 mate.

Chess: 2269

1 Qg3! fxg3 2 Bc4! Kxc4 3 Rc2 mate.

Chess: 2268

The drawing move is 1 . . . Rd2! (threat Rh2+) 2 hxg4 hxg4 (threat Qh8+ and mate) 3 Qg2 (forced) Qh8+ 4 Kg1 Rxg2+ 5 Kxg2 Qh3+ 6 Kg1 Qg3+ with perpetual check.

Chess: 2267

1 Rf2! If d3 2 Be4 and if Kh3 3 Bf5 mate or Rxg7+ 3 Rxg7 or Rh8 4 gxh8Q. If 1...d5 2 Bxd5 with similar mates. 1 Rf1? fails due to d3 2 Be4 Kh3 3 Bf5+ Kg2, so the rook must guard the second rank

Chess: 2256

1 Rh2! If Bxg3 2 Bxg3 and if Ke4 3 Re1 mate or Kd2 3 Bf4 mate. If 1...B elsewhere 2 Bd2+! Kxd2 3 Nf1 mate.

Chess: 2254

1 Nf1! exf1Q 2 Qf8+! Kxf8 3 Nd7 mate. Instead 1 Nd1? fails to exd1Q and the new queen guards the key d7 square.

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